Start by adding a map into the top level of your view. You can then move it to where you want but create a link to the new place, not actually move it. Add an override to the original map item and add your code into the override. For example my override looks like:

To take this a step further, has anyone got a good example of how to use geolocation to then offer a map/direction route from where the user currently is, to where the marker on the map indicates he's trying to get to?